.page-contact {
  --contact-pad: 20px;
  --contact-line: rgba(154, 163, 173, 0.2);
  --contact-gold-line: rgba(212, 175, 55, 0.26);
  --contact-paper-line: rgba(18, 26, 36, 0.12);
  position: relative;
  display: block;
  background: var(--midnight);
  color: var(--ink-black);
}

.page-contact .contact-wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--contact-pad);
}

.page-contact .contact-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .contact-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
}

.page-contact .contact-eyebrow--dark {
  color: var(--celadon-deep);
}

/* 面包屑 */
.page-contact .contact-crumb {
  background: var(--midnight);
  padding: 18px 0 8px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.14);
}

.page-contact .contact-crumb .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-contact .contact-crumb .breadcrumb__item,
.page-contact .contact-crumb .breadcrumb__sep {
  color: var(--stone);
}

.page-contact .contact-crumb .breadcrumb__link {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms ease;
}

.page-contact .contact-crumb .breadcrumb__link:hover,
.page-contact .contact-crumb .breadcrumb__link:focus-visible {
  border-bottom-color: var(--gold);
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 52px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(212, 175, 55, 0.16), transparent 58%),
    linear-gradient(170deg, var(--ink-navy) 0%, var(--midnight) 100%);
  color: var(--paper);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(154, 163, 173, 0.09) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(90deg, rgba(154, 163, 173, 0.09) 0 1px, transparent 1px 72px);
  opacity: 0.55;
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-contact .contact-hero__lead,
.page-contact .contact-hero__card {
  min-width: 0;
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(28px, 7.2vw, 46px);
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  margin: 18px 0 0;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.78);
}

.page-contact .contact-hero__aside {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(244, 239, 228, 0.62);
}

.page-contact .contact-hero__aside a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--contact-gold-line);
  padding-bottom: 1px;
}

.page-contact .contact-hero__aside a:hover,
.page-contact .contact-hero__aside a:focus-visible {
  border-bottom-color: var(--gold);
}

.page-contact .contact-quick {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .contact-quick__item {
  display: grid;
  gap: 3px;
  padding-left: 14px;
  border-left: 2px solid var(--contact-gold-line);
}

.page-contact .contact-quick__k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--celadon);
}

.page-contact .contact-quick__v {
  font-size: 14px;
  line-height: 1.65;
  color: rgba(244, 239, 228, 0.88);
}

/* 联系信息卡 */
.page-contact .contact-card {
  position: relative;
  border: 1px solid var(--contact-gold-line);
  background: linear-gradient(165deg, rgba(20, 49, 84, 0.98), rgba(11, 31, 58, 0.98));
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-contact .contact-card__visual {
  display: block;
  width: 100%;
  height: 132px;
  object-fit: cover;
  opacity: 0.5;
  border-bottom: 1px solid var(--contact-gold-line);
}

.page-contact .contact-card__body {
  padding: 18px 18px 22px;
}

.page-contact .contact-card__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .contact-chan {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-chan__item {
  padding: 12px 0;
  border-top: 1px solid rgba(154, 163, 173, 0.16);
}

.page-contact .contact-chan__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .contact-chan__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--celadon);
}

.page-contact .contact-chan__label::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  background: var(--celadon);
  transform: rotate(45deg);
}

.page-contact .contact-chan__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--gold-soft);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-chan__note {
  margin: 5px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(244, 239, 228, 0.6);
}

/* 反馈准备 */
.page-contact .contact-prep {
  background: var(--paper);
  color: var(--ink-black);
  padding: 44px 0 52px;
}

.page-contact .contact-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-contact .contact-prep__main,
.page-contact .prep-figure {
  min-width: 0;
}

.page-contact .contact-prep__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 5.6vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink-black);
}

.page-contact .contact-prep__text {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(18, 26, 36, 0.72);
}

.page-contact .prep-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  padding: 16px 16px 16px 18px;
  background: #FBF8F1;
  border: 1px solid var(--contact-paper-line);
  border-left: 3px solid var(--gold);
  transition: background 180ms ease, border-color 180ms ease;
}

.page-contact .prep-item:hover {
  background: #ffffff;
}

.page-contact .prep-item:has(input:checked) {
  background: var(--celadon-wash);
  border-left-color: var(--celadon-deep);
}

.page-contact .prep-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--celadon-deep);
  cursor: pointer;
}

.page-contact .prep-item input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--celadon-deep);
  outline-offset: 2px;
}

.page-contact .prep-item label {
  display: block;
  cursor: pointer;
}

.page-contact .prep-item__title {
  display: block;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink-black);
}

.page-contact .prep-item__text {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(18, 26, 36, 0.68);
}

.page-contact .prep-figure {
  margin: 0;
  padding: 10px;
  background: #ffffff;
  border: 1px solid var(--contact-paper-line);
}

.page-contact .prep-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .prep-figure figcaption {
  margin-top: 10px;
  padding: 0 4px 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.65;
  letter-spacing: 0.04em;
  color: rgba(18, 26, 36, 0.55);
}

/* 描述模板 */
.page-contact .contact-guide {
  background: var(--panel-navy);
  color: var(--paper);
  padding: 44px 0 52px;
  border-top: 1px solid var(--contact-gold-line);
  border-bottom: 1px solid var(--contact-gold-line);
}

.page-contact .contact-guide__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 5.6vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .contact-guide__lede {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.72);
}

.page-contact .contact-steps {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(212, 175, 55, 0.28);
  border: 1px solid rgba(212, 175, 55, 0.28);
}

.page-contact .contact-step {
  padding: 20px 18px 22px;
  background: var(--panel-navy);
  min-width: 0;
}

.page-contact .contact-step__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-contact .contact-step__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .contact-step__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(244, 239, 228, 0.7);
}

.page-contact .contact-guide__foot {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(154, 163, 173, 0.22);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.7);
}

.page-contact .contact-guide__foot a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--contact-gold-line);
}

.page-contact .contact-guide__foot a:hover,
.page-contact .contact-guide__foot a:focus-visible {
  border-bottom-color: var(--gold);
}

/* 合作与纠错 */
.page-contact .contact-collab {
  background: var(--celadon-wash);
  color: var(--ink-black);
  padding: 44px 0 52px;
}

.page-contact .contact-collab__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 5.6vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink-black);
}

.page-contact .contact-collab__lede {
  margin: 14px 0 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(18, 26, 36, 0.72);
}

.page-contact .contact-collab__grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .collab-card {
  padding: 20px 18px 22px;
  background: #FBF8F1;
  border: 1px solid rgba(79, 117, 105, 0.26);
  border-top: 3px solid var(--celadon-deep);
  min-width: 0;
}

.page-contact .collab-card__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink-black);
}

.page-contact .collab-card__to {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--celadon-deep);
  overflow-wrap: anywhere;
}

.page-contact .collab-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .collab-list__item {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(18, 26, 36, 0.76);
}

.page-contact .collab-list__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--celadon-deep);
  transform: rotate(45deg);
}

.page-contact .collab-list__item a {
  color: var(--celadon-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 117, 105, 0.45);
}

.page-contact .collab-list__item a:hover,
.page-contact .collab-list__item a:focus-visible {
  border-bottom-color: var(--celadon-deep);
}

/* 服务范围与响应 */
.page-contact .contact-response {
  background: var(--ink-navy);
  color: var(--paper);
  padding: 44px 0 52px;
}

.page-contact .contact-response__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 5.6vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .contact-response__lede {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.74);
}

.page-contact .contact-stats {
  margin: 26px 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(154, 163, 173, 0.2);
  border: 1px solid rgba(154, 163, 173, 0.2);
}

.page-contact .contact-stat {
  padding: 18px 16px;
  background: var(--ink-navy);
  min-width: 0;
}

.page-contact .contact-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--gold-soft);
}

.page-contact .contact-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(244, 239, 228, 0.66);
}

.page-contact .contact-response__note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.7);
}

.page-contact .contact-response__note a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--contact-gold-line);
}

.page-contact .contact-response__note a:hover,
.page-contact .contact-response__note a:focus-visible {
  border-bottom-color: var(--gold);
}

.page-contact .contact-foldings {
  margin-top: 26px;
  border-top: 1px solid rgba(154, 163, 173, 0.22);
}

.page-contact .contact-folding {
  border-bottom: 1px solid rgba(154, 163, 173, 0.22);
}

.page-contact .contact-folding > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .contact-folding > summary::-webkit-details-marker {
  display: none;
}

.page-contact .contact-folding > summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold);
}

.page-contact .contact-folding[open] > summary::after {
  content: "−";
}

.page-contact .contact-folding > summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-contact .contact-folding__body {
  margin: 0;
  padding: 0 0 18px;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.7);
}

/* 到访与邮寄 */
.page-contact .contact-visit {
  position: relative;
  overflow: hidden;
  padding: 44px 0 52px;
  background: var(--midnight);
  color: var(--paper);
  border-top: 1px solid var(--contact-gold-line);
}

.page-contact .contact-visit::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(154, 163, 173, 0.07) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, rgba(154, 163, 173, 0.07) 0 1px, transparent 1px 40px);
  pointer-events: none;
}

.page-contact .contact-visit__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-contact .contact-visit__main,
.page-contact .contact-address {
  min-width: 0;
}

.page-contact .contact-visit__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 5.6vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .contact-visit__lede {
  margin: 14px 0 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.74);
}

.page-contact .contact-visit__list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-contact .contact-visit__item {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--contact-gold-line);
}

.page-contact .contact-visit__k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--celadon);
}

.page-contact .contact-visit__v {
  font-size: 14px;
  line-height: 1.72;
  color: rgba(244, 239, 228, 0.82);
  overflow-wrap: anywhere;
}

.page-contact .contact-address {
  position: relative;
  padding: 22px 18px;
  border: 1px solid var(--contact-gold-line);
  background: linear-gradient(180deg, rgba(20, 49, 84, 0.55), rgba(6, 17, 32, 0.15));
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-contact .contact-address__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--celadon);
}

.page-contact .contact-address__text {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.75;
  letter-spacing: 0.02em;
  color: var(--gold-soft);
  overflow-wrap: anywhere;
}

.page-contact .contact-address__note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(154, 163, 173, 0.18);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 239, 228, 0.62);
}

/* 平板 */
@media (min-width: 720px) {
  .page-contact {
    --contact-pad: 48px;
  }

  .page-contact .contact-hero {
    padding: 46px 0 66px;
  }

  .page-contact .contact-hero__lede {
    font-size: 16px;
  }

  .page-contact .contact-quick {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 22px;
  }

  .page-contact .contact-card__visual {
    height: 168px;
  }

  .page-contact .contact-card__body {
    padding: 22px 22px 26px;
  }

  .page-contact .contact-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-collab__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .contact-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-stat {
    padding: 22px 20px;
  }

  .page-contact .contact-address {
    padding: 24px 22px;
  }
}

/* 桌面 */
@media (min-width: 900px) {
  .page-contact {
    --contact-pad: 60px;
  }

  .page-contact .contact-hero {
    padding: 54px 0 78px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .contact-prep,
  .page-contact .contact-guide,
  .page-contact .contact-collab,
  .page-contact .contact-response,
  .page-contact .contact-visit {
    padding: 62px 0 70px;
  }

  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .contact-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-visit__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .contact-address {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1160px) {
  .page-contact {
    --contact-pad: 80px;
  }
}